![]() General-purpose data-acquisition equipment usually falls between scopes and DMMs for sample speed and resolution. Some PC-plug-in digitizers and RF test equipment use sub ranging ADCs, which provide better resolution than flash converters, but at the expense of speed. ![]() For example, a digital oscilloscope needs high digitizing speeds but can sacrifice resolution. Different types of test equipment need different types of ADCs. Even if you work on digital signals exclusively, you probably use an ADC in an oscilloscope to look at the analog characteristics of your signals.ĪDCs come in several basic architectures, although many variations exist for each type. Inputs are the analog signals & output is a single bit digital signal.ĪDCs convert voltages that represent real-world signals into bits that microprocessors and software use to manipulate test data and control test equipment. The circuit has two inputs and one output. Most ADC’s use a circuit called a comparator. This process in known as quantization and the device employed for quantization is known as an Analog to Digital Converter – ADC. ![]() However due to the various advantages of having data in digital format like storage, processing, transmission etc., we prefer to convert these continuous varying quantities into discreet digital values. all changes and physical phenomenon occurring are continuous. In nature most of the signal around us is analog in nature i.e.
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